Over-regulation in Australia has long been past the point where the only sane thing to do is to quietly ignore it.
Your problem seems to be, you want to have a larger solar array, but can't extend your existing array due to red-tape bullshit. Right?
So... remove the existing panels. Get a new system installed that meets regulations, and the inverter has 'capacity to expand in future.' Check that expansion capacity would suit some panels with V,I specs that just happen to match your old ones.
Then once the legions of inspectors have left, put your old panels back up there and wire them into the inverter yourself.
Btw, I'm very interested to see some actual references for these 'rule changes'. Can you post some links, so I don't have to start cold searching, please?
I wonder if it may have anything to do with what I found in some old second hand panels? See here:
http://everist.org/NobLog/20160504_solar_panels_vs_emp.htmLong story short, the cell reverse protection diodes, if semi-shorted by lightning, can become solar-powered resistors and on sunny days potentially set fire to stuff.
Here's an alternative idea, if you're uncomfortable with red-tape cutting. You could dispose of the 'unapproved' panels by giving them to me.
I'm collecting panels, for when I move out of the city in a few years. My current property though large, is mostly tree-shaded. So solar panels are no use here. But I do have plenty of room to store them.
Supposedly we cannot even do DIY Ethernet cable installations in our own homes here in Australia.
You're obviously spending far too much time listening to red-tape retards. And contractors with high hourly rates.